Vulcanizing apparatus



May 31 1927. 1,630,457

H. K. WHEELOCK VULCANIZ ING APPARATUS Filed Aug. 27, 1926 I NV EN TOR. v

fierZerz /2. ZJI we/ock.

A TTORNl-D.

v and the like. I

' illustrated n the (lltU'Vll'lQS (7611113111698 a plate Eatented May 31,

moi w HERBERT KVWI-IEELOGK, oFA Ron', onto. i

,vULoAmzme APrAR 'riis,

' Application filed Aug'nst 27,1926. shinin 1 31,9 08.

This invention as, indicated relates to a ,vnlcanizing; apparatus. h'lore, particularly it relates to a vulzi'anizing device for curing or nilcanizing; outside repairs of tire casings The apparatus in' the :form

adapted recent-m with the thread portion of a tire casing-and prm'ided with a retractable marginal .tranie'which normallyproin 'jectsaslight distance aboi'e'the tread plate proper and permits a layer-of dry soapstone, f or similar material, to be placed upon the upper surface of the treadplate so that.

' when a tire non-skid design clamped on t, the soapstone" or other material enters 'tions of the tread rot-minga substantial support thereforf-and thus preserving the de gn Heretot'ore in' curing tirecasings, it has been the custom to ignore the design and form a patch which 'wpuia be substantially smooth and not conform to the tread design, or to a tempt to fill the space'about thetread with soapstone or similar material fbymanual means, which method was open to objection as requiing unusual skill to accomplish anydcsirable result. Y Y

The principal object of the present inven tionis to obviate the difiiculties referred to and to provide a tread plate which is adapt-f of the design, forming asubstantial supporttherefor, and transmitting the heat uniformly to the side walls oi: such pro ectlng serves to confine the soapstone area above the plate. i The invention is of particnlar'importance because/oi? the high price of crude rubber and the desirabilityfof conserving rubber in every reasonable manner. plishn'rent of the foregoing and related ends,

to the central said invention, then consists of the means.

hereinafter fully described and pointed out in the claims.

Theannexed drawing and the following description set forth in detail certain mechaparticularly into the spaces betwee'nfthe projecting per- '6 are engaged.

portions. The frame about the tread plate To the accomplate.

nisin enibodyingfthje inventionfsnoli disclosed means constituting, howei enj'butlone apparatus embodying the principle of 1n\"enti0n; Fig.I2 is a side elevation oftlie apparatus shown in Fig; f1; a 'IdIFigQB is 1a top plan Fig. 1. r

As clearly shown inlthe dra winb the r a ubstant ally square outline haying diagonal member r extens ons 2 at e ch of thelcor apparatus comprisesajbas'e" plate-'1 of at various mechanical 'forms 'infwhfich the principle of the inventionmaybe'usedg ln said annexed drawing: F 1g. 1 is aperspectiveview showing an z ew o l e pparatus, how ill ners' jupon iwhi'chgvertical;fstudsi 3 are 5,. mounted, said studsprqecting upwardly andhjavirig screw-threadedupper ends, 4 adapted to be'engaged-by'nuts Overftlie body portions" of "said studs, coi

T hri e The} base,"plate-preferably has rm-nieai rm tegrally therewith "a f upward "extension which forms 'the Vulcanizing or tread plate 7. The Vulcani zing-for"tread, plate; asj'is clearly illustrated inthe drawing is to f stand ard form and comprises .al concavejplate corresponding in .contour to the outer sur face of a tire casingfl The treadplatemay pr ectt'rOm the central'portion of the base plate, leaving a 1 margin about, its sides or.

may, as shown, be of unifornroutlinewith said base plate. A tframe s ef asiaeto fit, l

over the upstanding tread plate and'liayiiig. a curvati re .ab out itsupper iinargin: icorr'es spending theretopis}adaptedito be moul ited in jsl ab e en m wi t e tread p te;

The'framdasis elea'rly illustrated inthem drawing, is 'providedTwith projecting ears 11 extending diagonally 'OVQLflle 'respectiife corners of the irangie i ancl'f aperturedfsoi as to engage ojVer'the'respeet1ve"stiids (int-he] extensions of the base plate and rest against the springs mounted-on said studs. Immdiately beneath the'respective corners of the irame prqectmglugs 12 are provided which limit the downward movement of theframe to a point at whichthe framec ontour will '105 By the proper adjustment ofthe nuts, the i conform to the tread plate contour."

amount of extension of the tread? frame":

above the tread plate may beaccurately ad justed. It is ordinarily found desirable to Y providegfor the trame to. normally project three-eighths of an inch above. the tread 7 'The operation of the'device has already been indicated; lVhen the tread plate is to 'be used to spot cure a tread repair on a non-skid tire, the space above the treadplate 3 inside of the frame is filled with dry soapstone, orsome similar material adapted to transmit heat. The portion of the tread surface of the tire casing to be repaired is then clamped on the tread plate, the soap stone entering into the space'flbetween the projecting portions of the non-skid design of the tread, forming a substantial support and heattransmitting medium therefor, and thus preserving the design, "The necessary Jalcani'zing heat is applied in Well known man ner to the tread" p'late, usually from a flat steam plate, and the heat is transmitted directly' and through the soapstone or other material to the portionof the casing under- 1 913 Othermodes my. invention may be employed; instead of the one explained, change being made asre-' gardsfthe 'nechanis'm herein disclosed, provided the means'state'dby any'of the following claims or the equivalent or such 4stated'meansbe employed i V Itherc'fo're particularly pointouft and distinctlyjclainr as my invention 1. An apparatus of the character de scribed,:having in; combination a v'ulcani'zing .p'late and means, supported on said vulcaniZing plate adaptedto' provide a self-coniorming supporting base for an ob ect of irregular contour positioned above said vul-.

ca ne P 7 a An ap} Iar-a'tus, of the character de- I scribed,havingin combination afvulcanizing 45 An apparatus of the character desc-ribed,'hav1ng 1n combination a base, a vulo't appl 'ing the. principle 01 3Jirii apparatus of the-character de canizing plate provided thereon, a frame slidably engaged'about said plate and re silient means fornormally positioning the upper portion of said framea slight distance above the upper surface otsaid plate, I

5. An apparatus of the character described, having in combination a vulcanizing plate, a concave segmental top surface pro;

vided on said plate, vaframe slidably en-' 60 gaged about the outer portion of said plate, a convexs'urface -on'said frame adaptedtoform a continuation of the segmentalportion of said topsuriface when said frame is depressed to a position even with said surface, a plurality ofextensions atjthe corners of said frame and tread plate,and means cooperating with said extensions for normally .maintaining' said frame elevated'avith re-' spect to said tread plate.

6. An apparatus; of the character Ydee scribed, 'comprisinga base memberp rovided witha tread plate section, a plurality of verti'cal studs at the corner-sot said base meniaer, frame slida'bly] engaged over said i 75 tread plate section of said base inembeig'a plurality of .apertured members projecting trom'the corners of smar meiand adapted to engage over thefupperends or" said studs,

resilient members interposed between projecting membersot said b'aseand frame, and' means on said studs for 'lll'lllblng the upward moveinent oitsald frame? a 4. An. apparatus. of" the character described, comprising a base member provided Witha tread plate section,'a pluralityof Vertical studs at the corners oi 'said base mem-. her, a frame slid-ably engaged vover said tread plate section of said base member, a plurality of aperturedmembers projecting from the cornersof said frame and adapted to engage' over the upper ends of saidstuds, coiled springs engaged over said respective studs between projecting members of said base and trame,and means on said studsffor' limiting the upward 'movei'nent of said,

frame. I V v 1 Signed by me this 25th day oi August, 1926. v I

{HERBERT t. I WHEELOYCK. 

